@RiCkLaR there was a root exploit posted for the 2nd gen Cube in the last week. It looks like only temporary root for now, but it requires a version of FireOS earlier than 7.2.7.3.
It may be worth considering keeping the Cube pre 7.2.7.3 if root interests you. I realize you already updated, but I'm assuming you can still return it.
It may be worth considering keeping the Cube pre 7.2.7.3 if root interests you. I realize you already updated, but I'm assuming you can still return it.